I have updated the HTML5 Web Form Browser support grid to include the various input attributes, for what input type each is relevant, and which browsers support each attribute for each type.

TYPE ⇒

Attribute
⇓

Text, search, url, tel

Email

Password

Dateandtime
Date,
Month,
Week,
Time

Dateandtime-local,
number

range

color

Checkbox, radio

file

accept

WK, O,
FF, IE

autocomplete

O

O

O

O

O

O

O

autofocus

WK, O

WK, O

WK,O

WK, O

WK, O

WK, O

WK, O

WK, O

checked

WK, O,
FF, IE

disabled

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

Form

O

O

O

O

O

O

O

O

list

WK, O

WK, O

WK, O

WK, O

WK, O

WK, O

max

O, WK

O, WK

O, WK

maxlength

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

min

O, WK

O, WK

O, WK

multiple

FF, WK, IE

FF, WK

Name

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O, FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

pattern

WK, O

WK, O

WK, O

placeholder

WK

WK

WK

readonly

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

required

WK, O

WK, O

WK, O

WK, O

WK, O

WK, O

WK, O

size

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

step

O, WK

O, WK

O, WK

checked

WK, O,
FF, IE

value

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK, O, FF, IE

WK, O,
FF, IE

WK, O,
FF, IE

WK = Webkit (tested Safari 5)

O = Opera (10.5 on Mac)

FF = Firefox (3.6.3 on Mac)

IE = Internet Explorer (IE8 on XP)

Browsers that don’t support the type attribute may still support other attributes in the input as the browser may support attributes on the text input type (such as maxlength or size), and will therefore support those attributes on a type it doesn’t support, as the input will default to text type. For example, while IE and FF don’t currently support the email type, they do support the multiple attribute on that type, since they will accept a text type including space separated email addresses.

About The Author

My name is Estelle Weyl. I am a consulting web developer, am writing some books with O'Reilly, run frontend workshop,s and speak about web development, performance, and other fun stuff all over the world. If you have any recommendations on topics for me to hit, please let me know via comments. If you want